Skrob, Robert, author
Entrepreneur Press, 2011
Buku Teks
edited by Harold F. Tipton
CRC Press, 2012
Buku Teks
Hayes, Denis, author
Island Press, 2000
Buku Teks
Hayes, Denis, author
Island Press, 2000
Buku Teks
Matthews, Marty, author
McGraw-Hill, 2012
Buku Teks